30033243381 has 4 divisors (see below), whose sum is σ = 40044324512. Its totient is φ = 20022162252.

The previous prime is 30033243377. The next prime is 30033243391. The reversal of 30033243381 is 18334233003.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 30033243381 - 2² = 30033243377 is a prime.

It is a super-2 number, since 2×30033243381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30033243391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5005540561 + ... + 5005540566.

It is an arithmetic number, because the mean of its divisors is an integer number (10011081128).

Almost surely, 2^30033243381 is an apocalyptic number.

It is an amenable number.

30033243381 is a deficient number, since it is larger than the sum of its proper divisors (10011081131).

30033243381 is a wasteful number, since it uses less digits than its factorization.

30033243381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10011081130.

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 30033243381 its reverse (18334233003), we get a palindrome (48367476384).

The spelling of 30033243381 in words is "thirty billion, thirty-three million, two hundred forty-three thousand, three hundred eighty-one".